Trying to estimate the numbers 286,174+35,252+30,796 to see if my answers are reasonable when the numbers are all added up

Mr. and mrs. wallace have decided to buy a car for $21,600. they finance $15,000 of it with a 5-year auto loan at 2.9% arp. what will be their monthly payment be? a. $268.20 b. $268.86 c. $269.54 d. $387.16 i need !

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?

One positive integer is 2 less than another. the product of the two integers is 24. what are the integers